When Mel's sister types "ice," the following happens:
- The "i" key is pressed, but it is swapped with the "e" key, so it will produce "e".
- The "c" key remains as "c".
- The "e" key is pressed, but it is swapped with the "i" key, so it will produce "i".
Therefore, when she types "ice," the output that will appear on the screen will be "eci".